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This clever gadget, called Activ, makes it possible to harness the kinetic energy created by your own body! The personal electricity generator was designed to be worn on the knee- with each step, it juices up the battery a little more. After it’s full, just attach a USB cord directly to Activ to power your cell phone or other device. Instead of plugging into the wall… plug into you! Designer: Ben Azzam Friggen sick!!